Update CHANGELOG.md

CHANGELOG.md

@@ -3,20 +3,25 @@
 
 ## 4.0.1
   - Republish all the gems under jruby.
+
 ## 4.0.0
   - Update the plugin to the version 2.0 of the plugin api, this change is required for Logstash 5.0 compatibility. See https://github.com/elastic/logstash/issues/5141
-# 2.0.5
+
+## 2.0.5
   - Specs fixes, see https://github.com/logstash-plugins/logstash-patterns-core/pull/137
-# 2.0.4
+
+## 2.0.4
   - Depend on logstash-core-plugin-api instead of logstash-core, removing the need to mass update plugins on major releases of logstash
-# 2.0.3
+
+## 2.0.3
   - New dependency requirements for logstash-core for the 5.0 release
+
 ## 2.0.0
  - Plugins were updated to follow the new shutdown semantic, this mainly allows Logstash to instruct input plugins to terminate gracefully,
    instead of using Thread.raise on the plugins' threads. Ref: https://github.com/elastic/logstash/pull/3895
  - Dependency on logstash-core update to 2.0
 
-# 0.4.0
+## 0.4.0
  - Added grok patterns for nagios notifications
  - Added commong exim patterns
  - Allow optional space between sysloghost and colon, fixes https://github.com/elastic/logstash/issues/2101 for Cisco ASA devises.
@@ -32,17 +37,17 @@
  - Add basic apache httpd error log format
  - Support TIMESTAMP_ISO8601 in HAProxy patterns, useful for rsyslog and other systems that can be configured to use this format. Fixes https://github.com/logstash-plugins/logstash-patterns-core/pull/80
 
-# 0.3.0
+## 0.3.0
  - Updated the AWS S3 patterns
  - Added patterns for rails 3
  - Added patterns for haproxy
  - Added patterns for bro http.log
  - Added shorewall patterns
-# 0.2.0
+## 0.2.0
  - Added patterns for S3 and ELB access logs amazon services
-# 0.1.12
+## 0.1.12
  - add some missing Cisco ASA firewall system log patterns
  - fix cisco firewall policy_id regex for policies with '-' in the name
-# 0.1.11
+## 0.1.11
  - Added Catalina and Tomcat patterns
  - Added German month names